# HoverNotes vs Sider

HoverNotes records 190,686 monthly visits with +156% month-over-month growth and Freemium pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

| Metric | [HoverNotes](https://openaitools.app/tool/hovernotes) | [Sider](https://openaitools.app/tool/sider) |
| :--- | :--- | :--- |
| Website URL | https://hovernotes.io | https://sider.ai |
| Categories | AI Notes Generator, AI Video Summarizer, AI Productivity Tools | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 190,686 | 2,644,740 |
| MoM Growth Rate | +156% | -10.6% |
| Primary Market | India | United States |
| Direct Visits | 94,185 | 1,699,535 |
| Review Score | 4.3 | 4.5 |
| Saved Count | 0 | 31 |
| Supported Platforms | Website | Website |

## HoverNotes

HoverNotes positions itself as the AI note taker that actually watches the video rather than only reading the captions. As you play a lecture, tutorial or course lesson, the extension captures on-screen content — code snippets, equations, slides and diagrams — and turns it into clean, structured Markdown with headings, bullet points and timestamped references. A one-click screenshot tool drops the current frame straight into your notes, which is useful for demo walkthroughs and visual subjects.

The extension works on essentially any site where video plays: YouTube, Udemy, Coursera, LinkedIn Learning, Skillshare, edX, Khan Academy, Vimeo, TED, Bilibili and university platforms such as Canvas, Blackboard, Moodle, Panopto and Kaltura, plus local video files. Because notes are stored as plain Markdown on your device, Obsidian users can point HoverNotes at their vault and keep everything local and searchable. Extra features include a distraction-free split workspace that dims the rest of the page, advanced playback controls from 0.1x to 16x speed, ad skipping on YouTube, and export to PDF or Word.

Beyond note taking, HoverNotes offers Live Translate, which translates a speaker's voice into your chosen language while keeping the picture in sync, and "Hovie," an in-note AI assistant that knows your notes, the transcript and your screenshots so it can explain a confusing moment or summarise a section. A generous free tier covers 20 minutes of AI notes with unlimited manual notes, while the Unlimited Pro plan removes the AI caps for regular learners.

**Pricing & Plans:** Freemium. The free Starter tier includes 20 minutes of AI Video Notes, 10 minutes of Live Translate, unlimited manual note taking, screenshots with timestamps, Obsidian integration and export to PDF or Word. Unlimited Pro is around US$18/month (about US$120/year, roughly US$10/month billed annually) and adds unlimited AI Notes, AI-chosen screenshots, transcript saving to your vault, AI Notes in 24 languages, custom prompts, unlimited Hovie chats and one hour of Live Translate per month.

- **Visual AI that watches the screen:** Captures code, equations, diagrams and slide content exactly as they appear, so notes are complete even on videos with no captions.
- **Structured Markdown notes:** Generates headings, bullets and syntax-highlighted code blocks that drop straight into an Obsidian vault or any Markdown editor.
- **Timestamped screenshots:** One click adds the current frame to your notes at the right timestamp, ideal for diagrams, demos and UI walkthroughs.
- **Live Translate and Hovie assistant:** Listen to a speaker in your own language while the video stays in sync, and ask Hovie to explain or summarise any moment using your notes and screenshots.
- **Works on any video site:** From YouTube, Udemy and Coursera to university lecture systems and local files — if it plays in the browser, HoverNotes notes it.

**Strengths:** Captures on-screen code, equations and diagrams that transcript-only tools miss; Saves to Obsidian as local Markdown files for privacy and long-term ownership; Works across dozens of video platforms plus local files with no per-site setup; Free tier is genuinely usable for occasional note taking

**Limitations:** Requires the Chrome extension, so it is browser-bound rather than a standalone app; AI note minutes are capped on the free plan; heavy users need the Pro subscription

[Profile (Markdown)](https://openaitools.app/tool/hovernotes.md)

## Sider

Sider's premise is that you should not have to leave the page you are reading to use an AI assistant. Its sidebar overlays the browser, detects the content in view, and responds with chat, summaries, translations or explanations using frontier models from multiple providers. The result is a lightweight research and reading workflow: highlight a paragraph, ask for a simpler explanation, translate a PDF and keep the original in sight.

Recent versions push Sider beyond chat. Sider Hand is a browser agent that works across real websites and uses your logged-in sessions to carry out multi-step jobs such as comparing prices while shopping, filling forms, doing cross-site research or triaging a Gmail inbox. Sider Code goes the other way, letting you instruct changes to a website's appearance or behaviour in plain language and preserving the customisation for next time. A Create module generates images, videos, slides and documents from the same panel.

Pricing moves from a limited free tier to credit-based paid plans aimed at heavier users. Lower plans suit occasional chat, summarisation and translation, while higher tiers add a dedicated cloud computer that keeps the browser agent running around the clock and a larger monthly credit allowance. Sider ships as browser extensions for Chrome and Edge plus desktop and mobile apps for macOS, Windows, iOS and Android, and is used by a very large installed base.

**Pricing & Plans:** Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

- **AI sidebar on any page:** A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab.
- **Summarise and chat with documents:** Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
- **Translation and read-aloud:** Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
- **Sider Hand browser agent:** Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.
- **Sider Code page customisation:** Describe a change in plain words and have Sider restyle or simplify any website, remembering the modification for future visits.

**Strengths:** Works inside the browser you already use, with no context switching; Access to multiple frontier models from one subscription; Strong reading toolkit: PDF chat, YouTube summaries, translation and read-aloud; Increasingly capable agent features for multi-step browser tasks

**Limitations:** Useful credits run out quickly on the free and lower tiers; Model availability and quota rules change over time, so expectations must be checked per plan; Some agent and code features depend on a cloud machine and heavier plans

[Profile (Markdown)](https://openaitools.app/tool/sider.md)

## Frequently Asked Questions

### How do HoverNotes and Sider compare in monthly traffic?

HoverNotes has 190,686 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

HoverNotes has a month-over-month growth rate of +156%; Sider has -10.6%.

### How does pricing compare?

HoverNotes: Freemium. Freemium. The free Starter tier includes 20 minutes of AI Video Notes, 10 minutes of Live Translate, unlimited manual note taking, screenshots with timestamps, Obsidian integration and export to PDF or Word. Unlimited Pro is around US$18/month (about US$120/year, roughly US$10/month billed annually) and adds unlimited AI Notes, AI-chosen screenshots, transcript saving to your vault, AI Notes in 24 languages, custom prompts, unlimited Hovie chats and one hour of Live Translate per month. Sider: Freemium. Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) |
| 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) |
| 3 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools. | [.md](https://openaitools.app/tool/monica-ai.md) |
| 4 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features. | [.md](https://openaitools.app/tool/merlin-ai.md) |
| 5 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider. | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 6 | [ThetaWave AI](https://openaitools.app/tool/thetawave-ai) | 526,384 | +6.8% | Freemium | Converts lectures and videos into structured notes and interactive quizzes, but operates primarily as a web app rather than a video browser extension. | [.md](https://openaitools.app/tool/thetawave-ai.md) |
| 7 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) |
| 8 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider. | [.md](https://openaitools.app/tool/kome-ai.md) |
| 9 | [Voilà — AI Assistant, Chat and Writer](https://openaitools.app/tool/voil-chatgpt-browser-assistant) | 152,170 | -4.8% | Freemium | Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools. | [.md](https://openaitools.app/tool/voil-chatgpt-browser-assistant.md) |
| 10 | [Noiz](https://openaitools.app/tool/noiz) | 148,844 | -27.8% | Free Trial | Transcribes and summarizes video content quickly as a browser extension, but lacks HoverNotes' specialized real-time visual course tracking. | [.md](https://openaitools.app/tool/noiz.md) |

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Source: https://openaitools.app/compare/hovernotes-vs-sider

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